/*********************************************************************
 * Copyright (C) 2003 Andrew Khan, Adam Caldwell
 * <p>
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * <p>
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * <p>
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ***************************************************************************/

package jxl.read.biff;

import jxl.biff.IntegerHelper;
import jxl.biff.RecordData;
import jxl.biff.Type;

/**
 * Class containing the zoom factor for display
 */
class SCLRecord extends RecordData {
    /**
     * The numerator of the zoom
     */
    private int numerator;

    /**
     * The denominator of the zoom
     */
    private int denominator;

    /**
     * Constructs this record from the raw data
     * @param r the record
     */
    protected SCLRecord(Record r) {
        super(Type.SCL);

        byte[] data = r.getData();

        numerator = IntegerHelper.getInt(data[0], data[1]);
        denominator = IntegerHelper.getInt(data[2], data[3]);
    }

    /**
     * Accessor for the zoom factor
     *
     * @return the zoom factor as the nearest integer percentage
     */
    public int getZoomFactor() {
        return numerator * 100 / denominator;
    }
}
